Duntov 30-30 cam

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May 17, 2003 | 02:12 AM

oldace84

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Race Director

Joined: Aug 2002

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From: tucson AZ

St. Jude Donor '04 & '05

Duntov 30-30 cam

Is this cam still viable in todays envirorment????????
Or not.....Solid lifter...lots of adjustment....
would it practicle??????
Just would like to know??????
I have one....thats new....
tony
:confused: :smash: :confused:

May 17, 2003 | 05:30 AM

ol,RJ

Burning Brakes

Joined: Sep 2000

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From: NewCastle IN. USA

Re: Duntov 30-30 cam (oldace84)

if your talking about passing emissions then I'd say no.
I think the duration at .050" is around 254 degrees and valve lift was about .488"
thats a lot of duration compared to what most street cams have nowadays. considering how much camshaft tech has advance since then (the 30-30 was designed back in the 1960's) the cam is pretty outdated.
the 70 to 72 LT-1's had a simular cam and I can say from experience that its not very happy under 3000rpm, once it gets pass there its a blast.

May 17, 2003 | 05:51 AM

black bart

Drifting

Joined: Jul 2001

Posts: 1,897

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From: La Fontaine Indiana

Re: Duntov 30-30 cam (ol,RJ)

In my opinion that cam is worth whatever it will bring at the scrap yard.
That said you can find someone that would buy it because if you go to a car show you will hear the old cars with those outdated cams in them and they think they are cool because of the lope. A modern roller can make more power and have much better low end manners. What that cam does best is waste gas and pollute the air.

May 17, 2003 | 07:32 AM

PatsLs1vette

Le Mans Master

Joined: Jul 2001

Posts: 9,622

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From: absecon nj

Re: Duntov 30-30 cam (black bart)

Ran that cam a few years back and yes its outdated,doesnt pull to around 4000 and up,i had to run 4.10 's with it and a 3500 stall and that was with carb. not sure how tpi would be.

May 17, 2003 | 08:12 AM

Nathan Plemons

Race Director

Joined: May 2001

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Re: Duntov 30-30 cam (patsnitrovette)

Quote:

Ran that cam a few years back and yes its outdated,doesnt pull to around 4000 and up,i had to run 4.10 's with it and a 3500 stall and that was with carb. not sure how tpi would be.

If it doesn't pull until 4000 rpm's it would be a complete waste on a TPI. Even ramming air down a TPI with forced induction it peaks at 4500 RPM's. Woohoo 500 useable RPMs!

May 17, 2003 | 09:49 AM

VetNutJim

Safety Car

Joined: May 1999

Posts: 3,651

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From: Atlantis

Cruise-In I Veteran

Re: Duntov 30-30 cam (oldace84)

I didn't think any of these were still around.
That's a pretty rare piece of history.

That's what all the racers used to "SAY" they were running if you asked them what cam they had. ;)

May 17, 2003 | 10:15 AM

ittlfly

Safety Car

Joined: Feb 2002

Posts: 4,212

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From: Sun City West Az

Re: Duntov 30-30 cam (VetNutJim)

I put one in my 1970 LT-1...way back in the early '70s. It ran like a stripped a#@ed ape with a spread bore on top. However, it was a big PIA as the I was always having to adjust the lifters even tho I was using "polly locks" on the rocker studs. Make a lamp stand out of it and buy a hyd. roller. :D

[Modified by ittlfly, 7:15 AM 5/17/2003]

May 17, 2003 | 02:36 PM

jstkrsn

Racer

Joined: Jun 2002

Posts: 401

Likes: 41

From: Parrish FL

Re: Duntov 30-30 cam (ittlfly)

Had one in my 59 Vet in a 283. Had to adjust the lifters at least once a month. So I was always taking the valve covers off. Was easy on that car, but the valve covers were always leaking oil because I couldn't afford to change the gasket every month. Operating range was 4000-7000 RPM.